07 Grand Prix Trans. Fluid Change Schedule

Transmission Control Module (TCM) (LS4)
Left front of the engine compartment, near the left headlight assembly .What engine does your vehicle have ?

LS4
Engine - Gas, 8 CYL, 5.3L, SFI, Aluminum, Cylinder Deactivation, GM

I'm going to take a wild guess an say you have 3.8l

L32
Engine - Gas, 6 Cylinder, 3.8L, SFI, V6 L32
Engine - Gas, 6 Cylinder, 3.8L, SFI, V6 Supercharged, GM
, GM

If it's the 3.8l L32
Engine - Gas, 6 Cylinder, 3.8L, SFI, V6 Supercharged, GM you don't have a TCM module . you have the PCM

Have you changed the trans filter and fluid?

you could be losing in line pressure or the pressure solenoid could be defective . you can take your vehicle to a transmission shop and with the transmission scan tool they should be able to tell you if your losing pressure or the solenoids has gone bad or something else

Chane the filter and put new fluid back in.

No I think you just have a worn out ****** that need to be rebuilt, just replacing the torque converter is not the fix, since the ****** must come out to replace the torque converter that is when you rebuild it.

For Automatic transmission problem,Check the list of help links below.click the link below:----Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

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Automatic transmission shift lever issues?-------

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

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AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

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AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

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Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

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Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

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Transmission Slips out of 2nd gear?

http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html

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OD light flashing and transmission fluid leaking?

http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html

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Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

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transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html

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****** wont go in reverse?

http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

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Automatic transmission will not go into reverse?

http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

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Transmission is making buzzing noise?

http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

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This will help.

Thanks.

The forward clutches are going bad is the most likely problem. To repair the trans should be rebuilt.

97 Grand Prix has an L36 Engine if N/A, L67 if Supercharged

Transmission is a 4T65E (-HD if supercharged)

Buick Regals, and Monte Carlo's share the powertrain and driveline along with a handful of other vehicles.

The tranny is called a 4T65E-HD(heavy duty). The rebuild kits are the same for both supercharged and non-supercharged cars. The occasional harshness is caused by the EPC solenoid hanging up from wear. I recommend installing a Superior Shift Correction kit, 4th clutch hub (the splines strip), EPC, and TCC/PWM solenoid.

This combo works great!

slipping or flairing between (during shifts) is usually the result of internal seal failure inside trans. you can check fluid level, and / or change trans fluid... if changing, any excessive metal debris or non metallic flakes in the pan indicate need for rebuild. Shifts are controlled by solenoids not by vacuum.